ScienceInsights

At 23 weeks, your baby is the size of a large mango and nearly viable. Here's what's developing and what to expect from your bump and body.

Losing a pound through walking or running takes more miles than most estimates suggest. Here's what the math actually looks like for your body weight and pace.

Learn the key signs of rosacea, including eye symptoms and how it appears on darker skin, plus how doctors tell it apart from acne or eczema.

Your nutritional needs shift throughout your cycle. Here's what to eat during each phase to support your energy, mood, and hormones.

Learn how eye exams work, how to read your prescription, and what you're entitled to when getting glasses.

Frequent cramps usually come down to a few common causes. Learn what's likely behind yours and what you can do to get relief and prevent them.

Learn which foods fuel a better mile run and which ones to skip, plus how timing and hydration can affect your performance.

Most serial killers share traits of antisocial personality disorder, but psychology tells a more complex story involving brain differences and childhood trauma.

Learn to recognize the signs of overstimulation in your body and emotions, what triggers it, and simple ways to calm down when it hits.

A 175 lb man likely needs 80–140g of protein daily, depending on age, activity, and goals. Here's how to find your number and hit it.